Destructible oil container



March 8, 1938. D. SCHMIDT DESTRUCTIBLE OILA CONTAINER Filed Aug. 7, 193eATTO RN EY Patented Mar. 8, 1938 yUNITED STATES 2,110,843 nEs'rnUcTmLEon. CONTAINER David Schmidt, Lalxewood, Ohio, assignor to The DobeckmunCompany, Cleveland, Ohio, a corporation of Ohio PATENT oFFlcEApplication August 7, 1936, Serial No. 94,776 3 Claims, l(Cl. 229-14)The present invention relates to the manufacture of a container, thebody portion of which is made of a paper stock, preferably cardboard,-

10 sale of oil from bulk has been recently supplanted' by the sale ofoil from individual cans, so that the customer is assured of receivingstandard brands and qualities of oil. 'I'his practice has given rise toa number of objectionable features, a major tainers. The cans which areusually of tin, are not easily destructible, and the disposition of themis an expensive and troublesome operation. In addition, the oil tends tocling to the metal sur-` 20 faces of the can and it is necessary thatthe manufacturer place an additional quantity of oil in each can tocompensate the customer for the oil which clings to the interior of thecan.

It has been proposed heretofore, to construct 25 cans from paper stocks,but it has been diiiicult to make an oil tight can due to the verysearching property of oil.

It is the purpose of the present invention to design and construct a canof this type which will be 30 leak and seep proof, and the presentinventor has perfected such a container by the means slown and describedherein. It will be understood that the illustration and description isof the best known or preferred form of the invention, and 35 thatmodifications and changes may be made retaining the essential andcharacteristic features of the invention.

In the drawing Fig. 1 is a vertical cross section through the im'- 40provedcontainer, illustrating the various features A thereof which havemade it possible to construct an oil proof container of this type;

Fig. 2 is a view showing the body of the can broken away in the severalplies or layers a'nd illustrating the constructional details thereof;

Fig. 3 is an enlarged View at the edge of the can showing the detailedconstruction whereby the end of the can is fastened to the body; and

Fig. 4 is a detail of the oil proof inner lining.

5o Fig. 5 is an enlarged detail drawing of the overlapping spiral seam.

The container comprises the main or body portion l, which is formed ofspirally wound layers or plies of a heavy paper stock, such ascardboard.

strawbard, chipboard. 'or thelike. This is preferably formed of apluralityI of plica-two plies I' and Ib being illustrated. The plies,whether two or more, are adhesively secured together ani. aid

with the seams out of register. This form of cardboard tubing is old andwell known.

The oil resistant properties are secured by an inner lining of an oilproof sheet which is.

indicated by the numeral 2. This is preferably a sheet made fromregenerated cellulose sheeting, known by the trade name Ce'llophane, orequivalent material, such, for example, as any. celluloslc or other filmwhich is oil proof. These man E-l-s s U En Nov 11 1941 Iterials whichare well known oil resistant substances, have the added advantage thatthey 15 diiiiculty being the destruction of the empty conreadily "shedoil, so that the amounts previy 'o usly essential to give full measurein the old metallic cans, are reduced with the improved con- It has beenproposed heretofore to line a container with Cellophane or similarmaterials, but the diiliculty has been in securing the properapplication and sealing of the inner lining. The present constructionsecures this result, as will be now set forth.`

The cil proof lining 2 is first secured to an inner paper lining 3 byany of the usual laminating processes suitable and well known for thepurpose. The lining2 may be secured to the backing 3 by the well knownthermoplastic cements. The edge of the backing 3y is protected byfolding the oil proof sheet about the edge of the backing as shown at Iin Fig. 4. The paper which is employed is readily adhered to the innerturns of the body during the process o f making. thetube, which isillustrated in Fig. 2.

It will be seen that the reversely folded edge portion 4 overlaps the`adjacent edgeof the next spiral turn and contacts with the oil prooflining on the next adjacent ply so that a seal is made between twosurfaces of the lining. This is shown at 5 in Fig. 1 and is alsoillustrated in Fig. 2. The joint at this point is made by a suitableadhesive which will resist the oil and will securely adhere the opposedsurfaces of the Cello. phan or other lining. Such an adhesive may be ofthe type previously described. A solution of zinc chloride may beemployed at this point,

as this material softens the surfaces of the oellulose sheets and causesthe two surfaces to unite into an oil proof seal. I

'I'hepaper stock is thinfand iiexible so that'it may be readily wrappedabout the usual mandrel' or former. 'I'he showing in Fig. 1 isnecessarily vexaggerated for the purpose of adequately illustrating theconstruction. In fact, the seam is only slightly perceptible.

The lining which has been described, is one of the essential features ofthe invention whichping is reduced to a minimum. This secures an 4 oilVtight joint at the ends of the can where a relatively thick overlapwould give rise to crevices through which the oil could seep.

The end of the container gives a serious problem in the manufacture of asatisfactory oil proof container. In the form shown, the ends are closedby round metal caps or disks 6, the outer peripheries of which areprovided with channels I in which the edges of the container are seated.The rim of the disk is turned over to provide the curled edge 18 andthis is crimped against the outer Wall. The channel is made somewhatdeeper than is customary, and this provides for an additional andsupplemental crimp ID about the can. A coating of a suitable lute orfiller I2 is applied about the inner wall of the channel as a part ofthe sealing operation.

In the ordinary can of this type, the center of the cap or disk isusually Within the plane of the edge portion. It has been found thatthis construction gives rise to leakage due to the heavy character ofthe contents, as the weight of the oil on the unsupported -central areaof the disk causes it to spread at the seal. To obviate thisobjectionable feature, the cap in the present construction is supportedbyaextending it flush with or slightly beyond the plane of the loweredge of the can. Such an expedient is shown in ,I Fig. 1 in which thedisk is formed with a, circular rib I4, which affords a support for thedisk The container shown and described herein forms an oil tightreceptacle for the transportation and storage of oil. It solves theproblem of providing a can, the body of which may be easily destroyed.It is more economical of oil and is cheaper and better in many ways thanthe standard tin can which has been used for the purpose.

What is claimed is:

1. A destructible oilproof container comprising a.` body portion formedof spirally Wound heavy paper stock, and an inner oil proof liningcomposed of a sheet of oil resistant material laminated to a thin paperbacking, the composite sheet being spirally wound with its adjacentedges in overlapped relation and adhesively secured to the inner bodyWall, the edge of the backing being enclosed in a reversely turned foldof the oil proof material, Which reverse fold is adhesively secured tothe face of the oil proof sheet immediately adjacent thereto.

2. A destructible oil proof container comprising a body portion formedof paper stock, and an inner oil proof lining composed of a sheet of oilresistant material laminated to a thin paper backing, the compositelining being spirally Wound with its adjacent edges in overlappedrelation and attached to the inner body Wall, the edge oi thebackingbeing enclosed in a reversely turned fold of the oil proof material,which reverse fold is adhesively secured to the face of the oil proofsheet immediately adjacent thereto.

3. A destructible oil proof container comprising a body portion formedof a heavy` paper stock, and an inner oil proof lining composed of asheet of relatively thin paper and a regenerated cellulese sheetinglaminated thereto with an edge of the thin paper enclosed in a reverselyturned laminated fold of the cellulose sheeting, the lining beingspirally wound with its adjacent edges in overlapped relation and thereversely turnedportion of the cellulose sheeting adhesively seadjacentturn, said lining being secured to the I inner body wall.

DAVID SCHMIDT.

